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| 1 | 长江流域现代沉积物碎屑锆石U-Pb年龄物源探讨显示文摘长江流域上游到入海口共10个现代沉积物样品碎屑锆石U-Pb年龄分析表明,200~300、400~500、750~850和1800~2000Ma这4组年龄是长江流域沉积物U-Pb年龄的主要组成,出现在大多数样品中,其中又以200~300、750~850Ma占主体。10个样品中大多数锆石颗粒Th/U>0.3,说明这些锆石多是岩浆成因的锆石。所有样品锆石年龄的重叠度和相似度都在0.6以上,说明长江流域现代沉积物在不同河段,其锆石U-Pb年龄相近。通过与长江流域可能物源区羌塘地块、义敦岛弧、松潘甘孜复理石盆地、扬子克拉通、秦岭造山带、大别造山带几个构造单元锆石U-Pb年龄对比发现,除了羌塘地块和义顿岛弧之外,其他几个构造单元几乎都包括200~300、400~500、750~850和1800~2000Ma这4组年龄,因此,由锆石U-Pb年龄判别不出具体的物源供给。在青藏高原东部的红河和湄公河沉积物中反映出与长江流域相似的U-Pb年龄谱,从而进一步证实由于长江流域可能物源区锆石U-Pb年龄的相似性,单一碎屑锆石U-Pb年龄方法不能把各个物源区区分开来,有必要与其他物源分析方法相结合。 | 杨蓉 Diane Seward 周祖翼 | 2010 | 海洋地质与第四纪地质2010，30，6： | 17 |
| 2 | 金的热液地球化学显示文摘本文对金的元素地球化学性质、金在低温热液中的溶解-迁移形式进行了全面系统的阐述,认为金可以AuCl_2、Au(OH)_2^-、Au(HS)_2^-及Au(NH_3)_2^+等多种形式存在。在确定金在成矿流体中究竟以什么形式溶解一迁移时,除了考虑各种配合物的稳定性、溶解度大小外,配位体的浓度及形式也是重要决定因素。研究表明,成矿流体沸腾和非晶态硫化物表面吸附可能是金矿床形成的主要机理。今后要特别重视硫化物表面吸附成矿机理的研究。 | T. M. Seward 魏春生 | 1993 | 地质地球化学1993，，1： | 7 |
| 3 | Modelling of an hydraulic excavator using simplifiedrefined instrumental variable(SRIV)algorithm显示文摘Instead of establishing mathematical hydraulic system models from physical laws usually done with the problems of complex modelling processes,low reliability and practicality caused by large uncertainties,a novel modelling method for a highly nonlinear system of a hydraulic excavator is presented.Based on the data collected in the excavator’s arms driving experiments,a data-based excavator dynamic model using Simplified Refined Instrumental Variable(SRIV) identification and estimation algorithms is established.The validity of the proposed data-based model is indirectly demon- strated by the performance of computer simulation and the real machine motion control experiments. | Jun GU James TAYLOR Derek SEWARD | 2007 | 控制理论与应用(英文版)2007，5，4： | 6 |
| 4 | Improved control of intelligent excavator using proportional-integral-plus gain scheduling显示文摘Consider the design and implementation of an electro-hydraulic control system for a robotic excavator, namely the Lancaster University computerized and intelligent excavator (LUCIE). The excavator was developed to autonomously dig trenches without human intervention. One stumbling block is the achievement of adequate, accurate, quick and smooth movement under automatic control, which is difficult for traditional control algorithm, e.g. PI/PID. A gain scheduling design, based on the true digital proportional-integral-plus (PIP) control methodology, was utilized to regulate the nonlinear joint dynamics. Simulation and initial field tests both demonstrated the feasibility and robustness of proposed technique to the uncertainties of parameters, time delay and load disturbances, with the excavator arm directed along specified trajectories in a smooth, fast and accurate manner. The tracking error magnitudes for oblique straight line and horizontal straight line are less than 20 mm and 50 mm, respectively, while the velocity reaches 9 m/min. | 顾军 D. SEWARD | 2012 | Journal of Central South University2012，19，2： | 5 |
| 5 | 硼在共存水蒸气-富硼熔体之间分配的实验研究及其地质意义显示文摘硼作为一种常用的地球化学指示剂和示踪剂,对研究俯冲带岩石学过程、岩浆-热液分异作用、火山活动以及稀有元素、铜、金的成矿机制具有重要意义。硼具有高水溶性和挥发性,它在气体中的分配、迁移能力和存在形式有助于理解含硼矿物的形成条件、流体化学组成的演化趋势、硼同位素的分馏效应和成矿金属的富集机理。本文在200-350℃、0.19-3.43 MPa条件下实验研究了B2O3-H2O体系中硼在共存水蒸气和富硼熔体(液体)之间的分配,平衡时气相中的B2O3含量为1.06%-32.35%。200℃、250℃、300℃和350℃时硼在气体-熔体之间的表观分配系数分别为0.035、0.042、0.20和0.33,即随温度上升,硼在含水气相中的分配和迁移能力增强。含水的富 B 熔体与硼酸稀溶液体系的气体-液体分配系数变化不大,表明B2O3-H2O±NaCl 体系中硼的气-液分配能力受液体或熔体中硼含量的影响较小,而主要与温度有关。经热力学分析,350℃、0.19-1.74 MPa条件下水蒸气中的气态硼物种可能为H3BO3和HBO2,可以预计随水蒸气压力的升高, H2O的配位数将会增大, H3BO3或其他可能的气态物种H3BO3·H2O会变得更为重要。某些火山活动区可见天然硼酸结壳(升华壳)的形成,灼热和干燥的火山岩石表面有利于硼酸从气相中凝析和沉淀。本实验结果表明,某些富硼酸的火山喷气孔气体的形成可能与地下高温火山岩浆(岩体)中存在因液态不混溶作用或晚期出溶作用产生的含水富硼的残余熔体或流体有关,熔体的去气作用或流体的减压相分离导致含水气相的产生,硼则随之大量分配至含水气体中并喷出地表。 | 张生 陈根文 SEWARD T M 王玉荣 胡光黔 | 2014 | 地球化学2014，43，6： | 5 |
| 6 | Genomic insights into the ESBL and MCR-l-producing ST648 Escherichia coli with multi-drug resistance显示文摘多粘菌素由 multidrug 抵抗的克否定的病原体对严重感染充当避难处的一根最终的线。这个常规想法被活动 colistin 抵抗基因(mcr-1 ) 的最近的发现戏剧性地质问在食物动物和世界范围的人是流行的。更重要地, mcr-1 基因被发现与另外的抗菌素抵抗基因 co 局部性,提起可能性与平底锅药抵抗超级臭虫正在出现。然而,很少在 mcr-1-positive 的染色体上被报导细菌的主人水库。这里,我们报导三个人定序的染色体 mcr-1-positive Escherichia coli (E15004, E15015 和 E15017 ) 孤立并且通过细菌的比较 genomics 的分析定义一般特征。和顺序打字的进一步的 genomic 采矿允许我们阐明 MCR-1-carrying E。coli E15017 属于顺序类型 ST648 和 coproduces 扩大光谱的 -lactamase (ESBL ) 。给 ST648 与任何一个新德里 metallo 为伙伴所知的事实 -- lactamase 1 或 ESBL,我们的结果与 multidrug 电阻作为流行克隆加亮 ST648 的可能性。 | Huimin Zhang Christopher H. Seward Zuowei Wu Huiyan Ye Youjun Feng | 2016 | Science Bulletin2016，61，11： | 4 |
| 7 | Digital Servo Control of a Robotic Excavator显示文摘An electro-hydraulic control system is designed and implemented for a robotic excavator known as the Lancaster University Computerised and Intelligent Excavator (LUCIE). The excavator is being developed to autonomously dig trenches without human intervention. Since the behavior of the excavator arm is dominated by the nonlinear dynamics of the hydraulic actuators and by the large and unpredictable external disturbances when digging, it is difficult to provide adequate accurate, quick and smooth movement under traditional control methodology, e.g., PI/PID, which is comparable with that of an average human operator. The data-based dynamic models are developed utilizing the simplified refined instrumental variable (SRIV) identification algorithm to precisely describe the nonlinear dynamical behaviour of the electro-hydraulic actuation system. Based on data-based model and proportional-integral-plus (PIP) methodology, which is a non-minimal state space method of control system design based on the true digital control (TDC) system design philosophy, a novel control system is introduced to drive the excavator arm accurately, quickly and smoothly along the desired path. The performance of simulation and field tests which drive the bucket along straight lines both demonstrate the feasibility and validity of the proposed control scheme. | GU Jun SEWARD Derek | 2009 | Chinese Journal of Mechanical Engineering2009，22，2： | 4 |
| 8 | Doppler echocardiographic index for assessment of global right ventricular function显示文摘 | Chuwa Tei Karl S. Dujardin David O. Hodge Kent R. Bailey Michael D. McGoon A.Jamil Tajik James B. Seward | 1996 | Journal of the American Society of Echocardiography1996，，6： | 2 |
| 9 | Secular Trends in Incidence of Atrial Fibrillation in Olmsted County, Minnesota, 1980 to 2000, and Implications on the Projections for Future Prevalence显示文摘 | Yoko Miyasaka Marion E. Barnes Bernard J. Gersh Stephen S. Cha Kent R. Bailey Walter P. Abhayaratna James B. Seward Teresa S.M. Tsang | 2006 | Circulation2006，，2： | 2 |
| 10 | Left Ventricular Form and Function Revisited: Applied Translational Science to Cardiovascular Ultrasound Imaging显示文摘 | Partho P. Sengupta Vijay K. Krishnamoorthy Josef Korinek Jagat Narula Mani A. Vannan Steven J. Lester Jamil A. Tajik James B. Seward Bijoy K. Khandheria Marek Belohlavek | 2007 | Journal of the American Society of Echocardiography2007，，5： | 2 |
| 11 | 离子选择电极法测定水热气体中的硼含量及硼的气态迁移能力研究显示文摘火山和成矿地质现象表明硼可以在含水流体和气体中运移,本文应用离子选择电极法测定水热气体中硼的溶解度,以揭示硼的气态迁移能力。使用氟硼酸盐选择电极,测定了经氟硼酸化的硼酸标准溶液和含硼气体凝结水的电位,当硼含量处于地质流体的主要范围内(0.52-524.50 mg/L)时,电极电位与硼浓度的对数呈现出灵敏度很高的能斯特线性关系,标准曲线具有很好的稳定性和重现性。本方法测定硼的检出限为0.13 mg/L,低于饮用水标准规定的硼含量限值,适用于测定水热气体中的硼含量。硼酸挥发实验显示,硼在150℃、0.37 MPa水蒸气中的含量可达0.65%-0.72%,与富硼火山喷气的硼含量相符,显示硼在高温水热条件下可在气相中显著迁移,且H3BO3气态分子是硼的主要迁移形式之一。矿床地质特征和实验表明,硼的气态迁移和电气石化与稀有金属型伟晶岩的形成和矿化以及某些热液-气成型Sn-W、Mo矿床和斑岩型Cu、Au矿床的形成密切相关。 | 张生 陈根文 Seward T M | 2016 | 岩矿测试2016，35，4： | 2 |
| 12 | Noninvasive Doppler derived myocardial perfonnance index:correlation with simultaneous measurements of cardiac catheterization measurement显示文摘 | Tei C Nishimura RA seward JB | 1997 | J Am Soc Echocardiogr1997，10，2： | 1 |
| 13 | Hydrosulphide complexing of Au (Ⅰ)in hydrothermal solutions from 150-400℃ and 500-1500 bar显示文摘 | Benning L G Seward T M | 1996 | Geochimica et Cosmochimica Acta1996，60，11： | 1 |
| 14 | Evaluation of right ventricular dysfunction in patients with cardiac amyloidosis using tei index显示文摘 | Won-Ho Kim Yutaka Otsuji Toshinori Yuasa Shinichi Minagoe James B Seward Chuwa Tei | 2004 | Journal of the American Society of Echocardiography2004，，1： | 1 |
| 15 | Varicella prevention in the United States: A review of successes and challenges 显示文摘 | MARIN M MEISSNER HC SEWARD JF | 2008 | Pediatrics2008，122，3： | 1 |
| 16 | Clinical otteome of mi/ral regurgitulion due to flail leaflet 显示文摘 | Ling LH Emiluez-Sav+ano M Seward JB | 1996 | N Engl J Med1996，335，19： | 1 |
| 17 | Noninvasive Doppler derived myocardialperformance index:correlation simultaneous measurement of cardiac catheterization measurement显示文摘 | Tei C Nshimura RA Seward JB | 1997 | J Am soc Echocardiogr1997，10，2： | 1 |
| 18 | Syn-thesis and crystal structures of three pyrazine-2-car-boxylate containing isostructural complexes : M ( 2-pyrazine-carboxylate ) 3 ( M = Co3+,Cr3+,and Rli3+ )显示文摘 | Ellsworth J M Khaliq Z M Seward K L | 2007 | J Chem Crystallogr2007，37，： | 1 |
| 19 | Varicella disease after introduction of varicella vaccine in the United States, 1995 - 2000 显示文摘 | Seward JF Watson BM Peterson CL | 2002 | JAMA2002，287，： | 1 |
| 20 | Determinants of pulmonary hypertension in left ventricular dysfunction显示文摘 | Enriquez-Sarano M Rossi A Seward JB | | 0，，： | 1 |
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